codemirror-lint-eslint provides the eslint-lint.js which is a CodeMirror addon to use CodeMirror Lint with ESLint.

You can play with the demo index.html which validate JavaScript content of a CodeMirror editor with ESLint:

To use eslint-lint.js, you must declare your CodeMirror instance with javascript mode, and activate lint (gutters & lint to true) like this :

var editor = CodeMirror.fromTextArea(document.getElementById("code-js"), {
    lineNumbers: true,
    mode: "javascript",
    gutters: ["CodeMirror-lint-markers"],
    lint: true
});

and include several scripts (see index.html to see the full scripts and CSS to include).

• ESLint scripts :

<script src="http://eslint.org/js/app/eslint.js" ></script> 

• Commons Codemirror :

<link rel=stylesheet href="resources/codemirror/doc/docs.css">
<link rel="stylesheet" href="resources/codemirror/lib/codemirror.css">
<script src="resources/codemirror/lib/codemirror.js"></script>

• JavaScript mode

<script src="resources/codemirror/mode/javascript/javascript.js"></script> 

• Commons Lint interface

<link rel="stylesheet" href="resources/codemirror/addon/lint/lint.css">
<script src="resources/codemirror/addon/lint/lint.js"></script> 

• Lint implementation with ESLint

<script src="eslint-lint.js"></script>

The basic structure of the project is given in the following way:

• eslint-lint.js the CodeMirror Lint addon which uses ESLint.
• index.html the demo which uses ESLint with CodeMirror editor.
• resources folder which contains CodeMirror & ESLint resources.